Grouting sleeve for steel bar connection

A technology for grouting sleeves and steel bars, which is applied to structural elements, building components, building reinforcements, etc., can solve the problems of long formulation adjustment process, high price, and many materials used in products, and achieves good shear and compression resistance. The effect of high production waste and convenient processing and manufacturing

Inactive Publication Date: 2017-06-06
SHENZHEN CITY MODERN BUILDING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when designing and processing, it is necessary to process multiple convex ribs on the inner wall of the sleeve. When processing the semi-grouting sleeve, it is also necessary to process an excessive wire lap joint for the sleeve, which is made of ductile iron. The material needs to be formulated. When the quality of the raw material is unstable, the fo

Method used

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  • Grouting sleeve for steel bar connection
  • Grouting sleeve for steel bar connection
  • Grouting sleeve for steel bar connection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figures 1 to 4 As shown, a grouting sleeve for steel bar connection includes a sleeve body 22. One end of the sleeve body 22 is provided with a grouting port 23, and the other end is provided with a grouting port 24. The sleeve body 22 is made of seamless steel pipe, and The inner wall of the sleeve body 22 is provided with two or more protruding male riflings 21 , thereby forming concave female riflings, and the distance between adjacent male riflings 21 is equal.

[0033] In this embodiment, the two ends of the sleeve body 22 are provided with elastic rubber sealing rings 25 to form a fully grouted sleeve. The two ends are respectively inserted with reinforcing bars 26, and are solidified and fixed by the grouting material 27.

[0034] In this embodiment, the rifling provided on the inner wall of the sleeve body 21 is an equidistant rifling. In order to further improve the tensile, shear and compression resistance of the sleeve, progressive rifling or mixed ...

Embodiment 2

[0036] Such as Figures 5 to 7 As shown, a grouting sleeve for steel bar connection includes a sleeve body 2, one end of the sleeve body 2 is provided with a grouting port 3, and the other end is provided with a grouting port 4, the sleeve body 2 is made of seamless steel pipe, and The inner wall of the sleeve body 2 is provided with two or more protruding male riflings 1 , thereby forming concave female riflings, and the distance between adjacent male riflings 1 is equal.

[0037] In this embodiment, one end of the sleeve body 2 is provided with a steel bar connecting portion, and the steel bar connecting portion is a constricted end 5, and the inner wall of the constricted end 5 is provided with threads 6 to form a semi-grouting sleeve. The end provided with the connecting part of the reinforcing bar can be inserted through rotation to fix the reinforcing bar 7 at this end, and the other end can be directly inserted into the reinforcing bar 7, and the grouting material 8 is ...

Embodiment 3

[0039] Such as Figures 8 to 10 As shown, a grouting sleeve for steel bar connection includes a sleeve body 12, one end of the sleeve body 12 is provided with a grouting port 13, and the other end is provided with a grouting port 14, the sleeve body 12 is made of seamless steel pipe, and The inner wall of the sleeve body 12 is provided with two or more protruding male riflings 11 , thereby forming concave female riflings, and the distance between adjacent male riflings 11 is equal.

[0040] In this embodiment, one end of the sleeve body 12 is provided with a steel bar connection part, which is a steel pipe extension 15, and the length of the steel pipe extension 15 is 1 / 2 of the length of the sleeve body 12, forming a semi-grouting sleeve . The end with the steel pipe extension 15 is squeezed so that the steel pipe extension 15 fits closely with the steel bar 16 to achieve a fixed connection, and the other end can be directly inserted into the steel bar 16, and the grout 17 i...

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Abstract

The invention discloses a grouting sleeve for steel bar connection, which comprises a sleeve body, wherein a grouting opening is formed at one end of the sleeve body; a grout outlet is formed at the other end of the sleeve body. The grouting sleeve is characterized in that the sleeve body is made of a seamless steel pipe; two or more riflings are arranged on an inner wall of the sleeve body; convex rifling ribs and concave rifling grooves are formed on the inner wall of the sleeve body; spacings between the adjacent rifling ribs are equal. The grouting sleeve takes the seamless steel pipe as a raw material, and the two or more riflings are arranged on an inner wall of the steel pipe, so that the tensile capacity, the shear capacity and the compressive capacity of the sleeve are good; the full-grouting or semi-grouting sleeve is manufactured according to different requirements, so that the sleeve is simple in structure and convenient to process and manufacture, and avoids the defects of high production waste, high pollution and high cost of the existing grouting sleeve.

Description

[0001] 【Technical field】 [0002] The invention relates to a grouting sleeve for steel bar connection. [0003] 【Background technique】 [0004] Most of the grouting sleeves used in the prior art are in the form of casting, and the inner wall of the grouting sleeve used forms a related inner cavity structure that determines the tensile, compressive, and shearing capabilities of the sleeve. The restraint mechanism and strain distribution of the sleeve have a significant impact. The strain distribution of the sleeve corresponds to the structure of the inner cavity, and shows different laws in the smooth section and the deformed section; the restraint of the sleeve on the grouting material is mainly from the mutual extrusion of the protruding ring ribs on the inner wall. The vertical component of the force, the constraint of the smooth section on the grouting material depends on the size of the splitting deformation of the grouting material. Therefore, when designing and processin...

Claims

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Application Information

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IPC IPC(8): E04C5/16
CPCE04C5/165
Inventor 谷明旺
Owner SHENZHEN CITY MODERN BUILDING SCI & TECH
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